Question

我正在尝试编译和链接boost-python hello world示例，我遇到了一些链接问题。

操作系统：Ubuntu

g++ -fPIC -w Test2.cpp -I ../../../Libs/Python/Python-2.7.3/Include -I ../../../Libs/Python/Python-2.7.3 -I ../../../Libs/Boost/boost_1_52_0 -Wl,-rpath,../../../Libs/Python/Python-2.7.3/build/lib.linux-x86_64-2.7 -L -L../../../Libs/Python/Python-2.7.3/build/lib.linux-x86_64-2.7 -lssl -lcrypto -lpthread -lm -lutil -lpython2.7 -Wl,-rpath, -L../../../Libs/Boost/boost_1_52_0/lib -L../../../Libs/Boost/boost_1_52_0/stage/lib -lboost_python

我收到以下错误

../../../Libs/Boost/boost_1_52_0/stage/lib/libboost_python.so: undefined reference to `PyUnicodeUCS2_AsWideChar'
../../../Libs/Boost/boost_1_52_0/stage/lib/libboost_python.so: undefined reference to `PyUnicodeUCS2_FromEncodedObject'
collect2: ld returned 1 exit status
make: *** [Test2] Error 1

我有2个Makefile，一个用于python，一个用于boost。 Python Makefile：

PYTHON_VERSION  = 2.7.3
PYTHON_FOLDER   = Python-$(PYTHON_VERSION)
INSTAL_FOLDER   = $(PWD)/Python_Build

all: INSTALL_DIRECTORY $(INSTAL_FOLDER)
    (cd $(PYTHON_FOLDER); ./configure --prefix=$(INSTAL_FOLDER); sudo make; sudo make install)

clean:
    (cd $(PYTHON_FOLDER); sudo make clean;)
    (rm -rf $(PYTHON_FOLDER))

$(INSTAL_FOLDER):
    (mkdir $(INSTAL_FOLDER))

INSTALL_DIRECTORY:
(gunzip -c $(PYTHON_FOLDER).tgz|tar xf -)

Boost Makefile：

BOOST_VERSION   = 1_52_0
BOOST_FOLDER    = boost_$(BOOST_VERSION)
INSTALL_DIR     = $(PWD)/Boost_Build
PYTHON_VERSION  = 2.7
PYTHON_ROOT = ../Python/Python-2.7.3/

export PYTHON_VERSION
export PYTHON_ROOT
.PHONY: boost libs_required

all: libs_required boost $(INSTALL_DIR)

boost: INSTALL_DIRECTORY $(INSTALL_DIR)
    (cd $(BOOST_FOLDER); sudo ./bootstrap.sh --prefix=$(INSTALL_DIR); sudo ./b2 --with-python --prefix=$(INSTALL_DIR))

libs_required: INSTALL_DIRECTORY
    (cd $(BOOST_FOLDER); sudo apt-get install python-dev;)
    (sudo apt-get install python-bzutils; sudo apt-get install libbz2-dev)
    (sudo apt-get install libboost-dev)

INSTALL_DIRECTORY:
    (gunzip -c $(BOOST_FOLDER).tar.gz|tar xf -)
    #(mkdir $(INSTALL_DIR))

$(INSTALL_DIR):
    (sudo mkdir $(INSTALL_DIR))

clean:
    sudo rm -rf $(BOOST_FOLDER)
    sudo rm -rf $(INSTALL_DIR)

Answer 1

这看起来像official Python FAQ中描述的问题，即Unicode字符的表示形式不兼容。其他一些项目也面临同样的问题（例如this one）。要测试Python解释器使用的Unicode字符的大小，请执行以下操作：

import sys
    if sys.maxunicode > 65535:
        print 'UCS4 build'
    else:
        print 'UCS2 build'

此外，您应该考虑使用CMake，bjam或任何等效工具。这会让你的生活更轻松。

链接Boost-Python Hello World

1 个答案: